Men who can see through walls

Titus Burckhardt writes that once in Morocco he bought Ibn Arabi's Futuhat Al Makkiyah and on his way back chanced to meet his friend Mohammed bin Makhluf, a dervish. He immediately guessed what Titus was carrying.

"What are you going to do with that?" he asked. "It is much too advanced for you. What you need is a primer (of the spiritual life)."
"In that case the book shall remain on my shelf until I am wise enough to study it" said Titus Burchkhardt. 

"When you are wise, you will no longer need the book." said the dervish. 

"Whom was it written for then?" asked Titus Burchkhardt.

The dervish replied the following:

"For men who can see through walls but do not do so, nor even wish to."

From the Preface of Bezels of Wisdom